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2 years ago

What is 3/4 + 5/12? I need help.

Mathematics

1 answer:

Reika [66]2 years ago

5 0

Answer:

the answer should be 7/6

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7/7q+21= x /5q^2-45 then x=?

anzhelika [568]

Answer:

x = 5q - 15

Step-by-step explanation:

$\frac{7}{7q+21}=\frac{x}{5q^{2}-45}\\\\\frac{7}{7(q+3)}=\frac{x}{5 (q^{2} -9)}\\\\frac{1}{q+3}=\frac{x}{5*(q^{2}-3^{2})}\\\\\frac{1}{q+3}=\frac{x}{5(q+3)(q-3)}\\\\\frac{1}{q+3}*5*(q+3)(q-3)=x\\\\5(q-3)=x\\\\x= 5q-15$

3 0

2 years ago

Which is equivalent to 2(5m)+m? options are 11m, 12m, 5m+2 or 7m+2m

zlopas [31]

Answer:

11m

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Combining Like Terms

Step-by-step explanation:

Step 1: Define expression

2(5m) + m

Step 2: Simplify

Multiply: 10m + m
Add: 11m

5 0

2 years ago

Read 2 more answers

On Monday, 279 students went on a trip

belka [17]

45 students in each bus

7 0

2 years ago

What is the median age

jeka57 [31]

Median age is the age that divides a population into two numerically equally sized groups - that is, half the people are younger than this age and half are older. It is a single index that summarizes the age distribution of a population.

3 0

2 years ago

A new crew of painters takes two times as long as the old painters. Together they can paint in 6 hours. How many hours does it t

babymother [125]

Let n be old painters time. Then the new painters are 2n. So:
1/n+1/2n=1/6
2+1=2n/6
2n=18
n=9
The old painters take 9 hours; the new ones take 18
☺☺☺☺

3 0

2 years ago